Stocks in bullish mode as investors await Twitter trading

The early focus on Wall Street will be Twitter's debut on the New York Stock Exchange, after the company's initial public offering priced late yesterday at $26 per share. Overall, stocks are on a positive streak, with both the Dow and S&P 500 on track for their fifth straight week of gains. The Dow set another record close in Wednesday trading, and the S&P 500 has risen in 16 of the past 21 sessions.

It's a busy morning for economic numbers, with both initial jobless claims and third quarter GDP figures out at 8:30 a.m. ET. Economists are looking for 335,000 claims for last week, down from 340,000 the prior week. The GDP report – which had been delayed due to the government shutdown – is expected to show an annual growth rate of 2.0 percent for the third quarter, following a 2.5 percent rate during the second quarter.

We'll also get the latest natural gas inventory figures from the Energy Department at 10:30 a.m. ET, and September consumer credit figures at 3 p.m. ET.

Whole Foods (WFM) leads our list of stocks to watch, after the grocery chain reported fiscal fourth quarter profit of 32 cents per share, one cent above estimates. But revenue was below forecasts, and the company cut its sales forecast for 2014 due to price cuts.

Toll Brothers (TOL) is buying privately-owned Shapell Homes for $1.6 billion in cash, as it seeks to expand its presence in upscale California housing markets.

CBS (CBS) reported third quarter profit of 76 cents per share, excluding certain items, matching estimates, with revenue ahead of consensus. The media company's profits were 26 percent higher than a year earlier, helped by growth in content licensing.

Mondelez International (MDLZ) earned 41 cents per share for its third quarter, excluding certain items, one cent above estimates, with revenues falling short of forecasts. The food producer did raise its full year earnings outlook, but said weaker sales in China and low coffee prices affected its revenue performance.

Activision Blizzard (ATVI) reported third quarter profit of eight cents per share, excluding certain items, five cents above estimates. Revenue was also well above analyst forecasts, but the video game maker's current quarter earnings and revenue outlook is below current Street estimates. The company said the holiday shopping period could be "challenging".

American Eagle Outfitters (AEO) raised its third quarter earnings outlook to 19 cents per share from 15 cents, with the teen apparel retailer's sales coming in better than expected.

Noodles & Co. (NDLS) matched estimates with third quarter profit of 11 cents per share, but revenue for the quarter fell short, as does the restaurant chain's full year revenue outlook. The company did see more customer traffic and higher spending, but the growth was less than some on the Street had been expecting.

Tempur Sealy (TPX) earned 73 cents per share for the third quarter, beating estimates by five cents. Revenue was also well above estimates, as the mattress maker saw a better than expected jump in North American sales.

Transocean (RIG) beat estimates by 30 cents with third quarter profit of $1.37 per share, excluding certain items, with revenue also above consensus. Transocean benefited from increased demand as well as high rates for its services.